Sewing machine



FIG. 1 is a front elevational view of a sewing machine showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a right rear perspective view;

FIG. 4 is a left rear perspective view;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a front perspective view with the cover in exploded relationship; and

FIG. 8 is a rear perspective view in a second position of use. 

The ornamental design for a sewing machine, substantially as shown and described. 